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You searched on: Author: Douglas Olson

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Published: 9/3/2015
Authors: Jay H Hendricks, Jacob E Ricker, Jack A Stone Jr., Patrick F Egan, Gregory E Scace, Gregory F Strouse, Douglas A Olson, Donavon Gerty
Abstract: The future of pressure and vacuum measurement will rely on lasers and Fabry-Perot optical cavities, and will be based on fundamental physics of light interacting with a gas. Light interacts at the quantum level with matter such that light travels at ...

2. Fiber Optic Graphene Sensors for Dynamic Pressure Measurements.
Published: 7/1/2015
Authors: Douglas A Olson, Kevin O Douglass, Miao Yu, Haijun (Haijun) Liu
Abstract: We have constructed a fiber optical sensor using graphene with four monolayers that demonstrates similar performance to a traditional high-precision acoustic pressure sensor.

3. On-Fiber Plasmonic Interferometer for Multi-Parameter Sensing
Published: 4/20/2015
Authors: Zhijian Zhang, Yongyao Chen, Haijun (Haijun) Liu, Hyungdae Bae, Douglas A Olson, Miao Yu
Abstract: We demonstrate a novel miniature multi-parameter sensing device based on a plasmonic interferometer fabricated on a fiber facet in the optical communication wavelength range. This device enables the coupling between surface plasmon resonance and plas ...

4. Modeling of an air-backed diaphragm in dynamic pressure sensors: effects of the air cavity
Published: 10/7/2014
Authors: Haijun (Haijun) Liu, Douglas A Olson, Miao Yu
Abstract: As the key structure of most dynamic pressure sensors, a diaphragm backed by an air cavity plays a critical role in the determination of sensor performance. In this paper, a continuum mechanics model is developed to fully capture the structural-acous ...

5. Metrology for comparison of displacements at the picometer level
Published: 7/31/2014
Authors: Jack A Stone Jr., Patrick F Egan, Jay H Hendricks, Gregory F Strouse, Douglas A Olson, Jacob E Ricker, Gregory E Scace, Donavon Gerty
Abstract: An apparatus capable of comparing displacements with picometer accuracy is currently being designed at NIST. In principle, we wish to compare one displacement in vacuum to a second, equal displacement in gas, in order to determine gas refractive inde ...

6. Hybrid Miniature Fabry-Perot Sensor with Dual Optical Cavities for Simultaneous Pressure and Temperature Measurements
Published: 4/15/2014
Authors: Hyungdae Bae, Yun David, Haijun (Haijun) Liu, Douglas A Olson, Miao Yu
Abstract: We present a miniature dual-cavity Fabry-Perot sensor fabricated at the tip of an optical fiber for simultaneous pressure and temperature measurements. The pressure sensing cavity is an extrinsic air cavity created on a polymer housing by using an op ...

7. Picometer Metrology for Precise Measurement of Refractive Index, Pressure, and Temperature
Published: 12/18/2013
Authors: Jack A Stone Jr., Patrick F Egan, Donavon Gerty, Jay H Hendricks, Douglas A Olson, Jacob E Ricker, Gregory E Scace, Gregory F Strouse
Abstract: Fabry-Perot interferometers can be used for very precise measurement of the refractive index of gasses. This can enable increased accuracy of interferometer-based length measurement. In addition, because the refractive index of a gas depends on its ...

8. Proficiency Testing for Pressure Calibration at the National Voluntary Laboratory Accreditation Program (NVLAP)
Published: 12/3/2013
Authors: Douglas A Olson, Thomas R Hettenhouser, Robert G Driver
Abstract: The National Voluntary Laboratory Accreditation Program (NVLAP) has initiated a proficiency testing program for calibration laboratories accredited for pressure, designated as NVLAP code 20/T05. This program involves measurements by the laboratory o ...

9. Picometer metrology for precise measurement of refractive index, pressure, and temperature
Published: 7/14/2013
Authors: Jack A Stone Jr., Patrick F Egan, Jay H Hendricks, Gregory F Strouse, Douglas A Olson, Jacob E Ricker, Gregory E Scace
Abstract: For several years we have been studying the use of Fabry-Perot interferometers for precise measurement of the refractive index of gasses, where the primary motivation has been to improve interferometer-based length measurement. Because the refractiv ...

10. Use of higher order Heydemann-Welch model to characterize a controlled clearance piston gauge
Published: 10/17/2012
Authors: Douglas A Olson, Shaker A Gelany, Alaaeldin A Eltawil
Abstract: We present measurements on characterizing a new controlled-clearance piston gauge made by Ruska (Fluke Calibration) which has a 290 MPa maximum pressure and a nominal piston diameter of 3.27 mm. We tested the piston gauge to jacket pressures of over ...

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